<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="./vue.2.5.1.js"></script>
</head>

<body>
    <div id="app">
        <input type="checkbox" v-model='checked' v-on:click='checkedAll'> 全选{{checked}}
        <template v-for="(list,index) in checkboxList">
                    <input type="checkbox" v-model='checkList' :value="list.id"> {{list.product_inf}}
                </template> {{checkList}}
    </div>
    <script>
        var vm = new Vue({
            el: '#app',
            data: {
                checkboxList: [{
                    'id': '1',
                    'product_inf': '女士银手链'
                }, {
                    'id': '2',
                    'product_inf': '女士银手镯'
                }, {
                    'id': '3',
                    'product_inf': '女士银耳环'
                }],
                checked: false, //全选框
                checkList: []
            },
            methods: {
                checkedAll: function() {
                    var _this = this;
                    console.log(_this.checkList);
                    console.log(_this.checked);
                    if (_this.checked) { //实现反选
                        _this.checkList = [];
                    } else { //实现全选
                        _this.checkList = [];
                        _this.checkboxList.forEach(function(item, index) {
                            _this.checkList.push(item.id);
                        });
                    }
                }
            },
            watch: {
                'checkList': {
                    handler: function(val, oldVal) {
                        if (val.length === this.checkboxList.length) {
                            this.checked = true;
                        } else {
                            this.checked = false;
                        }
                    },
                    deep: true
                }
            },
        })
    </script>
</body>

</html>